Spark-arrester.



PATENTBD SEPT. 1, 1903.

H. S. WAINWRIGHT.

SPARK ARRESTBR.

APPLICATION FILED MAY 19, 1902.

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No. 737,803. PATBNTEDSEPT. 1, 1903. H. S. WAINWRIGHT.

SPARK ARRESTBR.

APPLICATION FILED my 19, 1902. NOMODEL. -5 sums-$113111 2.

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SPARK ARRESTER.

APPLICATION FILED MAY 19, 1902.

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SPARK ARRESTBR.

APPLICATION FILED MAY 19, 1902.

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UNITED STATES iatented September 1, 1905;.

PATENT OFFICE.

SPARK-ARRES'II'ER.

SPECIFICATION forming part of Letters Patent No. 737,803, dated September 1, 1903.

Application filed May 19, 1902. Serial No. 108M841 (No model.)

To all whom, it may concern.-

Be it known that I, HARRY SMITH \VAIN- WRIGHT,a subject of the King of Great Britain and Ireland,residing at Ashford,in the county of Kent, England, have invented Improvements in Spark-Arresters,of which the following is a specification.

, This invention consists of improvements in locomotive-engines, and has for object to enable a conical or other tube-like spark-arrest ing device (hereinafter called a spark-an,

rester) normally located between the blastpipe and the chimney to be easily and quickly shifted, so as promptly to afford access for cleaning and other purpose to the smokebox ends of fire-tubes without its being necessary for that purpose to dismount or completely disconnect and remove the spark-arrester. This provision for shifting the sparkarrester facilitates the use of a short blastpipe, whose discharge-orifice is considerably below the upmost row of fire-tubes, which is an arrangement that in actual practice contributes to economy in coal consumption.

With the object stated I mount a tube-like spark-arrester of any suitable construction so that it can be so turned about an axis as to afford access to fire-tubes to which access is normally prevented by the spark-arrester.

Figures 1, 2, 3, and 4 of the accompanying drawings show in vertical section sufficient of the smoke-boxes of locomotive-engines and their accessories as is necessary to illustrate the invention by means of examples, and Fig. 5 is a cross-section corresponding to Fig. 4. Fig. 6 shows another example in vertical section.

According to one arrangement (illustrated in Fig. 1) the axis a is vertical or approximately so, and a fastening device or devices, such as a hook-bolt Z) or hookbolts, is or are provided for securing the spark-arrester in position for use. The spark-arresteris shown having pivots c and (Z, fitting, respectively, in a lug e, projecting from a chimney-cone f, and in a projecting portion of a blower-ring g, secured to the upper end of the blast-pipe h. The spark-arrester '1; (shown in Fig. 1) is composed of a framework and wire or rod spirally wound thereon, as described in the specification of my application for Letters Patent Serial No. 80,793. Such a spark-arrester may be used in conjunction with a hori zontal grid j at its upper end or with a perforated plate or guard projecting laterally from the chimney cone f and formed by flanges thereof or otherwise. A tube -like spark-arrester 2, adapted to be turned about a vertical axis, may, as shown in Fig. 2, be combined with a spark-arrester k, which comprises upper and lower rings 71; and k notched or recessed bars and wire or rod it wound spirally around said bars and located in the notches or recesses thereof and which extends from the chimney-cone f to the chimney-base Z and forms a continuation of the arrester 2 Instead of wire or rod other suitable flexible metallic material, as chain orwire rope, may be employed.

Fig. 3 illustrates the horizontal hinging of a vertical spark-arrester such as described toa chimney-cone, so as to provide ready means of access to fire-tubes. The spark-arrester is composed of two similar parts m and a, each composed of a framework comprising notched or recessed bars and Wire or rod wound spirally thereon and both mounted on pivots 0, secured to a flange p of the cone q The position of the arrester when its parts have been turned about their axes to give free access tofire-tubes is indicated by dotted lines. To enable the parts m and n to be rotated, the aperture bounded by the flange 1), in which theyare located, is sufficiently large, the parts an and n being provided with perforated flanges m and 7L to fit in the said aperture.

Figs. 4E and 5 show, respectively, in vertical central section and in cross -section a spark-arrester made of two parts 1" and 8, each constructed, similarly to that shown in Fig. 1, of notched or recessed framework and spirally-arranged rod or Wire located in the notches or recesses thereof. At any given level the one part 1" is of slightly less radius than the other part 3, so that by a partial rotation of either part the rod or Wire sparkarresting walls of the two parts can be brought together, so that that of the part 1" will be radially within that of the part 5 in order to give free access to fire-tubes to which access would otherwise be prevented by the arrest'erl The parts 0 and s are guided by two annular projections t and a, respectively, on an internal perforated flange v of the chimney-cone w and on a blower-ring 0c. The rings 1 of the framework of the part r lit the interiors of the projections 25 and it, and the rings 2 of the part .9 fit the exteriors thereof, the rings 1 and 2 thus constituting guides for the two parts of the arrester.

Fig. 6 is a vertical section showing between a blast-pipe h and a chimney-cone f a sparkarrester similar to that shown in a like position in Fig. 4 and between the spark-arrester just mentioned and a chimney-base Z a sparkarrester similar to that shown in Fig. 2.

It will be noted that all the spark-arresters that I have illustrated are tube-like in form, and it will be understood that any appropriate construction of tube-like spark-arrester may be arranged to be turnable about an axis, so as to afford access to fire-tubes according to my invention, as above set forth. By the expression tube-like spark-arrester I mean one whose general form is that of a tube whether conical or not and whether it be composed of framework and wire or otherwise constituted, so as on the one hand to allow gases to flow from the smoke-box through its wall toward the chimney and on the other hand to obstruct the flow of sparks or glow ing particles toward the chimney.

It will be obvious that the constructions hereinbefore described can be variously modified without departing from the essential features of the invention.

WVhat I claim is 1. In a locomotive-engine, a tube-like spark-' with ablast-pipe, of a tube-like spark-arrester adapted by way of rotation about a vertical axis, but without dismounting, to give free access to fire-tubes to which free access would normally be prevented by said arrester.

4. In alocomotive-engine,a tube-like sparkarrester comprising two parts of which, at any given level, one is of less radius than the other of said parts and each of which is adapted to be moved by way of rotation, but without dismounting, so as to bring the sparkarresting walls of said two parts one radially within the other in such positions as to give free access to fire-tubes to which free access would normally be prevented by said arrester.

5. Inalocomotive-engine, atube-likesparkarrester comprising two parts of which, at any given level, one is of less radius than the other of said parts and each of which comprises an open-work spark-arrestin g wall and upper and lowerguides, and fixed guides against which the aforesaid guides bear, the two sets of guides being adapted to allow each of the aforesaid two parts of the arrester to be moved by way of rotation so as to bring the sparkarresting walls of the two parts one radially within the other in such positions as to give free access to fire-tubes to which free access would normally be prevented by said arrester.

6. In alocomotive-engine, the combination with a chimney-cone and a chimney-base, of a tube-like spark-arrester adapted by way of rotation, but without dismounting, to give free access to fire-tubes to which free access would normallybe prevented by said arrester, and a spark arrester extending from said chimney-cone to said chimney-base.

7. In a locomotive-engine, the combination with a chimney-cone and a chimney-base, of

a tube-like spark-arrester adapted by way of rotation, but without dismounting, to give free access to fire-tubes to which free access would normally be prevented by said arrester, and a spark arrester extending from said chimney-cone to said chimney-base,and forming a continuation of the aforesaid arrester.

8. In a locomotive-engine, the combination with a chimney-cone, and a chimney-base, of a tube-like spark-arrester adapted by way of rotation, but without dismounting, to give free access to fire-tubes to which free access would normally be prevented by said arrester, and a spark arrester extending from said chimney-cone to said chimney-base and comprising longitudinal notched or recessed bars and metallic material wound spirally around said bars and located in the notches or recesses thereof.

9. Ina locomotive-engine, the combination with a chimney-cone, and a chimney-base, of a tube-like spark-arrester adapted by way of rotation, but without dismounting, to give free access to fire-tubes to which free access would normally be prevented by said arrester, and a spark arrester extending from said chimney-cone to said chimney-base, each of said arresters comprising a framework including longitudinal notched or recessed bars and flexible metallic material wound spirally around said bars and located in the notches or recesses thereof.

10. In alocomo tive-engine,the combination with a chimney-base and a blast-pipe, of a tube-like spark-arrester made in two sections each of which is adapted by way of rotation but without dismounting to give free access to fire-tubes to which free access would normally be prevented by said arrester.

11. In alocomotive-engine,the combination with a chimney-base and a blast-pipe, of a tube-like spark-arrester made in two sections each of which is connected to said chimneybase so as to be adapted by way of rotation, but without dismounting, to give free access to fire-tubes to which free access would normally be prevented by said arrester.

12. In a locomotive-engine, the combination with a chimney-base and a blast-pipe, of a IIO tube-like spark-arrester made in two sections of which each is connected both to said chimney-base and to said blast-pipe so as to be adapted by way of rotation, but without dismounting, to give free access to fire-tubes to which free access would norm ally be prevented by said arrester.

13. Inaloco1notive-engine,the combination with a blast-pipe, of a chimney-base thereabove, a chimney-cone located between said blast-pipe and said chimney-base, and a tubelike spark-arrester situate between said chimney-cone and said blast-pipe and made in two sections of which each is connected both to said chimney-cone and to said blast-pipe so as to be adapted by way of rotation but without dismounting to give free access to firetubes to which free access would normally be prevented by said arrester.

14. In alocon10tive-engine,the combination with a blast-pipe, of a chimney-base thereabove, a chimney-cone located between said blast-pipe and said chimney-base, a tube-like spark-arrester situate between said chimneycone and said blast-pipe and made in two sections of which each is connected both to said chimney-cone and to said blast-pipe so as to be adapted by way of rotation but without dismounting to give free access to fire-tubes to which free access would normally be prevented by said arrester, and means for locking said sections to said blast-pipe in their normal position.

Signed at Oharing Gross Hotel, London, V. 0., this 28th day of April, 1902.

HARRY SMITH VVAINYVRIGHT.

Witnesses:

HORACE A. TILLINGHAST, ALEX. RIDGW'AY. 

